What are the common irrigation sources?
Small farms draw from several sources, and many use more than one.
Matching the source to the crop matters. Tree fruit and pasture may tolerate a source that a salad garden cannot, so think about the crop first.
If you plan to sell crops, ask your extension agent whether the source affects food safety rules, since some surface water needs extra attention.
- Private wells
- Ponds and impoundments
- Streams and rivers
- Rainwater collection
- Municipal or rural water systems
- Irrigation districts or ditch companies
How do you compare reliability?
Think about the driest month, not the average one. A pond that holds water in spring may be low by August. A well may produce enough for a household but not for acres of crops.
Ask neighbors who irrigate, and ask your extension agent what has worked locally. Keep your own notes through a dry season so you know what to expect.
Ask a neighbor with a similar pond or well how it behaved in the last dry summer. Their experience is worth more than a brochure. Also consider how the source behaves after heavy rain. Streams and ponds can turn muddy and clog filters, which means more cleaning for a drip system.
Who owns the water?
Water rights are complicated and differ across states. In some places you can use groundwater on your own land freely up to a limit, in others you need a permit or a right, and surface water often has its own rules. Never assume.
Contact your state water resources agency and county office before drilling a well, building a pond, or drawing from a stream. Taking water you do not have a right to can lead to penalties.
Even if you have a legal right, the right may carry conditions about timing, quantity and purpose. Keep copies of any permits or letters and renew anything that expires. Neighbors sometimes share ditches, wells or ponds. If you do, put the agreement in writing, including who pays for repairs and who gets water first in a dry year.
What does water quality have to do with it?
Salty, high-mineral, or contaminated water can harm plants and soil, and surface water can carry germs that matter if the crop is eaten raw. Testing tells you what you have.
Ask extension staff what to test for. They can also advise on food safety rules that may apply if you sell what you grow.
If you sell produce, buyers or inspectors may ask where the water came from. Keep your test results and notes handy.
- Salt or mineral content
- Bacteria or other germs
- Chemical runoff from nearby land
- Clogging sediment or algae
What about cost and energy?
Pumping uses energy, and fuel or electricity costs can be bigger than the equipment. Gravity-fed systems from a higher source cost less to run. Drip and low-pressure systems use less water and less power than overhead sprinklers.
Compare the full yearly cost, including repairs, filters and labor, not only the purchase price.
Used equipment can save money but may not match your flow and pressure. Ask a dealer or extension agent to review a used system before you buy.
How do you use water efficiently?
Match watering to what the plant needs and the soil can hold. Mulch, soil building, and timing early in the day reduce loss. Check for leaks often.
NRCS and extension offices have advice on irrigation scheduling, and some programs help pay for efficient equipment.
Rainfall records are useful here. Track what falls in a rain gauge and adjust watering so you are not irrigating before a storm. Soil moisture checks with a trowel, a probe or a simple sensor help you water when plants need it and not on a fixed schedule. Overwatering wastes the source you worked to secure.
What should you do before building?
Make a simple plan: source, volume needed, distance, lift, pressure, and storage. Check rules, test the water, and talk to someone who has done a similar project.
Start with a small area and expand after you see how the source holds up.
Write down what worked at the end of every season. The record guides next year's expansion and shows how your source behaves. Keep receipts, maps and notes on pump size and pipe runs in one folder. If a part fails during a heat wave, you will know exactly what to order and where it connects.
Key takeaways
- Plan around the driest month, not the average.
- Water rights and permits vary by state, so check before you build.
- Test water quality, especially if crops are eaten raw.
- Compare yearly operating cost, not only purchase price.
Sources and further reading
Last reviewed: November 12, 2026. Written by the Rural Farm Life Editorial Team. See our editorial policy.